CN117528640A - Method and device for activating or deactivating reliable transmission - Google Patents

Method and device for activating or deactivating reliable transmission Download PDF

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Publication number
CN117528640A
CN117528640A CN202311363752.XA CN202311363752A CN117528640A CN 117528640 A CN117528640 A CN 117528640A CN 202311363752 A CN202311363752 A CN 202311363752A CN 117528640 A CN117528640 A CN 117528640A
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CN
China
Prior art keywords
transmission
time
reliable
channel quality
activating
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Pending
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CN202311363752.XA
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Chinese (zh)
Inventor
付喆
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN202311363752.XA priority Critical patent/CN117528640A/en
Publication of CN117528640A publication Critical patent/CN117528640A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • H04L1/0018—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement based on latency requirement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control

Abstract

The embodiment of the application provides a method for activating or deactivating reliable transmission, which comprises the following steps: obtaining the maximum transmission time; activating or deactivating a reliable transmission according to the maximum transmission time, the reliable transmission including at least one of: and copying transmission, repeating transmission and including the transmission mode of the target MCS. Based on the scheme, the terminal equipment can activate reliable transmission under the conditions that the data transmission fails and the transmission time does not exceed the maximum transmission time, can improve the probability of successful data transmission in the maximum transmission time, and does not influence the transmission of other data outside the maximum transmission time.

Description

Method and device for activating or deactivating reliable transmission
The present application is a divisional application of application number 202080089453X, entitled "method and apparatus for activating or deactivating reliable transmission" on application date 2020, month 01, 07.
Technical Field
The present application relates to the field of communications, and in particular, to a method and apparatus for activating or deactivating reliable transmissions.
Background
The fifth generation (5th generation,5G) mobile communication system supports industrial internet of things (industrial internet of things, IIoT), which introduces concepts such as time sensitive network (time sensitive network, TSN) or time sensitive communication (time sensitive communication, TSC) based on transmission requirements such as latency and reliability.
The duration of time that an application uses a communication service and may not receive an intended message may be referred to as the survival time (survivinal time). For an application or service, when the survival time is equal to a service period, the next packet must be correctly transmitted after the previous packet fails to be transmitted. The survival time is a parameter with positive significance for the TSC service, and how to use the survival time to meet the transmission requirement of the TSC service is a problem to be solved currently.
Disclosure of Invention
The application provides a method and a device for activating or deactivating reliable transmission, which can meet the transmission requirement of TSC service by using survival time.
In a first aspect, a method of activating or deactivating reliable transmissions is provided, comprising: obtaining the maximum transmission time;
activating or deactivating a reliable transmission according to the maximum transmission time, the reliable transmission including at least one of: and copying transmission, repeating transmission and including the transmission mode of the target MCS.
Based on the scheme, the terminal equipment can activate reliable transmission under the conditions that the data transmission fails and the transmission time does not exceed the maximum transmission time, can improve the probability of successful data transmission in the maximum transmission time, and does not influence the transmission of other data outside the maximum transmission time.
In a second aspect, there is provided another method of activating or deactivating reliable transmissions, comprising: transmitting a maximum transmission time to a first terminal device, the maximum transmission time being used for the first terminal device to activate or deactivate a reliable transmission, the reliable transmission comprising at least one of: and copying transmission, repeating transmission and including the transmission mode of the target MCS.
Based on the scheme, the terminal equipment can activate reliable transmission under the conditions that the data transmission fails and the transmission time does not exceed the maximum transmission time, can improve the probability of successful data transmission in the maximum transmission time, and does not influence the transmission of other data outside the maximum transmission time.
In a third aspect, an apparatus for activating or deactivating reliable transmission is provided, where the apparatus may implement a function corresponding to the method in the first aspect, where the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.
In one possible design, the device is a terminal device or a chip. The apparatus may include a processing unit and a transceiving unit. When the apparatus is a terminal device, the processing unit may be a processor, and the transceiver unit may be a transceiver; the terminal device may further include a storage unit, which may be a memory; the storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the terminal device executes the method described in the first aspect. When the device is a chip in a terminal device, the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin, a circuit, or the like; the processing unit executes instructions stored in a storage unit, which may be a storage unit (e.g. a register, a cache, etc.) in the chip or a storage unit (e.g. a read-only memory, a random access memory, etc.) located outside the chip in the terminal device, to cause the terminal device including the chip to perform the method according to the first aspect.
In a fourth aspect, an apparatus for activating or deactivating reliable transmission is provided, where the apparatus may implement a function corresponding to the method in the second aspect, where the function may be implemented by hardware, or may be implemented by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the functions described above.
In one possible design, the device may be a network device or chip. The apparatus may include a processing unit and a transceiving unit. When the apparatus is a network device, the processing unit may be a processor and the transceiver unit may be a transceiver; the network device may further include a storage unit, which may be a memory; the storage unit is configured to store instructions, and the processing unit executes the instructions stored in the storage unit, so as to cause the network device to perform the method according to the second aspect. When the apparatus is a chip in a network device, the processing unit may be a processor, and the transceiver unit may be an input/output interface, a pin, or a circuit, etc.; the processing unit executes instructions stored in a storage unit, which may be a storage unit (e.g. a register, a cache, etc.) in the chip or a storage unit (e.g. a read-only memory, a random access memory, etc.) located outside the chip in the network device, to cause the network device including the chip to perform the method according to the second aspect.
In a fifth aspect, a computer readable storage medium is provided, in which a computer program is stored which, when executed by a processor, causes the processor to perform the method according to the first aspect.
In a sixth aspect, there is provided a computer readable storage medium having stored therein a computer program which, when executed by a processor, causes the processor to perform the method of the second aspect.
In a seventh aspect, there is provided a computer program product comprising computer program code which, when run by a processor, causes the processor to perform the method of the first aspect.
In an eighth aspect, there is provided a computer program product comprising computer program code which, when run by a processor, causes the processor to perform the method of the second aspect.
In a ninth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first aspect.
In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the second aspect.
Drawings
FIG. 1 is a schematic diagram of a communication system suitable for use in the present application;
FIG. 2 is a schematic diagram of a method of duplicate transmission suitable for use in the present application;
FIG. 3 is a schematic diagram of a method of activating or deactivating reliable transmissions provided herein;
FIG. 4 is a schematic diagram of a method of obtaining survival time provided herein;
FIG. 5 is a schematic diagram of a method of activating reliable transport provided herein;
FIG. 6 is a schematic diagram of another method of activating reliable transport provided herein;
FIG. 7 is a schematic diagram of yet another method of activating reliable transport provided herein;
FIG. 8 is a schematic diagram of yet another method of activating reliable transport provided herein;
FIG. 9 is a schematic diagram of an apparatus for activating or deactivating reliable transmissions provided herein;
FIG. 10 is a schematic diagram of another apparatus for activating or deactivating reliable transmissions provided herein;
fig. 11 is a schematic diagram of a communication device for activating or deactivating reliable transmissions provided herein.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Turning first to the application scenario of the present application, fig. 1 is a schematic diagram of a communication system suitable for use in the present application.
The communication system 100 includes a network device 110 and a terminal device 120. The terminal device 120 communicates with the network device 110 through electromagnetic waves.
In the present application, the terminal device 120 may include various handheld devices, vehicle mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, such as a third generation partnership project (3 rd generation partnership project,3 GPP) defined User Equipment (UE), mobile Station (MS), soft terminal, home gateway, set top box, etc.
The network device 110 may be a base station defined by 3GPP, for example, a base station (gNB) in a 5G mobile communication system. Network device 110 may also be a non-3GPP (non-3 GPP) access network device, such as an Access Gateway (AG). Network device 110 may also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.
The communication system 100 is merely illustrative, and a communication system to which the present application is applied is not limited thereto, and for example, the number of network devices and terminal devices included in the communication system 100 may be other numbers.
In order to improve transmission reliability, the communication system may employ a transmission scheme with higher reliability, i.e., reliable transmission. Reliable transmission may include: one or more of duplicate (transmission), repeat (repetition) transmission, and transmission modes including a target modulation coding strategy (modulation and coding scheme, MCS).
The repeated transmission, i.e. the transmission of the original packet and at least one copy thereof of the same packet, or the transmission of the same data packet multiple times, the redundancy versions used for the multiple transmissions may be the same or different.
The target MCS is a preset or preconfigured or network-altered or network-indicated MCS. Specifically, the reliability of the MCS is high, or the MCS index (index) is low.
Duplicate transmissions, i.e., transmitting multiple identical packets. Duplicate transmissions are made at the packet data convergence protocol (packet data convergence protocol, PDCP) layer, with the same PDCP Packet Data Unit (PDU) mapped to different radio link control (radio link control, RLC) entities, respectively. The medium access control (medium access control, MAC) layer needs to transfer duplicate data of different RLC entities to different carriers, which can be duplicated using carrier aggregation (carrier aggregation, CA) and/or dual-connectivity (DC). The total number of duplicates (copies) corresponding to one PDCP PDU may be at most 4.
For CA duplicate transmission, duplicate PDCP PDUs are transmitted to two RLC entities (two different logical channels), respectively, and finally, it is guaranteed that the duplicate PDCP PDUs can be transmitted on different aggregated carriers, thereby achieving frequency diversity gain to improve data transmission reliability. As shown by data radio bearers (data radio bearer, DRB) 1 and DRB3 in fig. 2.
For DC duplicate transmission, duplicate PDCP PDUs are transmitted to two RLC entities corresponding to two MAC entities, one primary cell group (master cell group, MCG) MAC entity and one secondary cell group (secondary cell group, SCG) MAC entity, respectively, as shown in DRB2 in fig. 2.
In the following, the embodiment of the present application will be described by taking the communication system 100 as IIoT as an example.
Fig. 3 illustrates a method of activating or deactivating reliable transmissions provided herein. The method comprises the following steps:
s310, obtaining the maximum transmission time.
In order to ensure the maintenance or activation of higher layer applications, the terminal device needs to acquire a maximum transmission time in order to successfully send at least one data packet to the network device within the maximum transmission time. The maximum transmission time can be interpreted as: one service or stream is allowed to transmit for the longest time, or one service or stream may continuously transmit for the longest time of an error, or one service or stream is allowed to receive no packet or indication information for the longest time. One example of the maximum transmission time, namely the survival time, hereinafter, these two concepts are generic, unless otherwise specified.
The time to live may be preset or configured or indicated by the first node. The first node may be a network device or another terminal device. The network device includes at least one of the following: gNB, central network control (center network control, CNC), TSN node.
One method for the terminal device to obtain the survival time through the network device is shown in fig. 4.
The session management function (session management function, SMF) obtains configuration information from the CNC, the configuration information being used to configure the time-to-live of one PDU session.
The SMF sends the configuration information to the gNB.
The gNB transmits the above-mentioned survival time to the UE through a dedicated radio resource control (radio resource control, RRC) and/or a broadcast message. Alternatively, the gNB may configure the time-to-live for a particular DRB or quality of service (quality of service, qoS) flow or PDU session or TSC flow or UE in the RRC reconfiguration message, i.e. the granularity to which the time-to-live corresponds may be the DRB or QoS flow or PDU session or TSC flow or UE.
Further, during the handover procedure, the source base station may send the time-to-live to the target base station. That is, the target base station may acquire the survival time through the source base station. Further, the target base station transmits the survival time to the UE in the handover command.
The terminal device may activate or deactivate the function of reliable transmission depending on the maximum transmission time.
Specifically, whether the terminal device activates or deactivates reliable transmission according to the maximum transmission time may be preset, or may be configured or controlled by the network. For example, if the network configures or instructs the UE to activate or deactivate reliable transmissions according to the maximum transmission time, the UE activates or deactivates reliable transmissions according to the maximum transmission time. For another example, if the UE acquires the maximum transmission time, the UE activates or deactivates reliable transmission according to the maximum transmission time.
Alternatively, the terminal device may perform the following steps.
S320, activating or deactivating a reliable transmission according to the maximum transmission time, the reliable transmission including at least one of: and copying transmission, repeating transmission and including the transmission mode of the target MCS.
The transmission scheme including the target MCS may be understood as a configuration for realizing reliable transmission or a parameter of reliable transmission.
It should be noted that the configuration of duplicate transmission/duplicate transmission may be understood as a configuration for realizing reliable transmission or parameters of reliable transmission.
When the reliable transmission is not activated, the terminal device may activate or deactivate the reliable transmission according to the maximum transmission time. Wherein deactivation is also understood as deactivation. Or, in an inactive state, determining that reliable transmission is not used, in an active state, in an inactive state, etc.
Specifically, S320 may include at least one of the following:
activating the reliable transmission when the target data transmission fails;
deactivating the reliable transmission when the target data transmission is successful;
activating the reliable transmission when the transmission time of the target data is less than the maximum transmission time and when the transmission of the target data fails;
deactivating the reliable transmission when the transmission time of the target data is less than the maximum transmission time and when the transmission of the target data is successful;
and when the transmission time of the target data is greater than or equal to the maximum transmission time, deactivating the reliable transmission. Further, the UE reports that the maximum transmission time is exceeded, or that the transmission fails.
Wherein the target data is data corresponding to a specific DRB or quality of service (quality of service, qoS) flow or PDU session or TSC flow or UE.
The target data is specific data determined according to the maximum transmission time. The target data may be network-indicated or determined according to rules.
The target data may be data to be transmitted or transmitted, and if the transmission time of the target data is less than the survival time, the terminal device may activate reliable transmission when the transmission of the target data fails, or the terminal device may deactivate reliable transmission when the transmission of the target data is successful. If the transmission time of the target data is greater than or equal to the survival time, the terminal equipment deactivates the reliable transmission.
For example, the survival time is 1 TSC service period, the target data is a packet with transmission error, or a first packet with unsuccessful reception, or a first packet with continuous transmission error, or a first packet with unsuccessful reception. If the target data exists, the terminal device activates reliable transmission.
For example, the survival time is 2 TSC service periods, and the target data is the second packet with transmission error, or the second packet with continuous transmission error, or the second packet which is not continuously successfully received. If the target data exists, the terminal device activates reliable transmission.
For example, the survival time is 3 TSC service periods, and the target data is the first packet transmitted in error, or the first packet not successfully received in succession. If the target data exist, a first timer is started, or counting is carried out to obtain a first value N, and when the first timer is overtime, or when the first value is greater than or equal to a first numerical threshold, the terminal equipment activates reliable transmission.
An example of the threshold for the number of packet transmission errors that can be tolerated by the first numerical threshold described above may be based on time-to-live determination. For example, the terminal device may send data once in one TSC service period, where the survival time is 3 TSC service periods, and the first numerical threshold may be 1 or 2; when the first numerical threshold is 1, the reliable transmission can be activated by the transmission error of the target data once or twice; when the first numerical threshold is 2, the reliable transmission can be activated by the target data transmission error twice, and the reliable transmission can be deactivated by the target data transmission error once; the first numerical threshold may also be a maximum number of transmissions, which in this example is 3.
In another implementation, the terminal device may start a second timer to determine if the transmission time exceeds the survival time.
For example, when the first data transmission is completed or the first data transmission is successful, the second timer is started or restarted, wherein the first data is any one data. The duration of the second timer is related to the time-to-live. In particular, the second timer may be configured to be the length of the survival time. Accordingly, when the second timer expires, reliable transmission may be activated.
Furthermore, the network may indicate or configure a timer (first timer or second timer) for activating reliable transmission, i.e. the timer activates reliable transmission once it has timed out; or the timer is used for avoiding that the data transmission does not meet the requirement of the maximum transmission duration, the data is, for example, target data or n error packets, n is a positive integer, for example, when the timer has not timed out after n error packets appear, the reliable transmission is activated; or, for example, after n erroneous packets occur, a timer is started, and when the timer expires, reliable transmission is activated; or, for example, after n erroneous packets occur, reliable transmission is activated. And if the timer is overtime, activating reliable transmission. Before the timer is overtime, the data transmission is successful, and the timer is stopped. The timer is started at a first time or when target data exists.
For example, when the first data transmission is completed or the first data transmission is successful, the second value M is obtained by recounting, wherein the first data is any one data. When the second value is greater than or equal to the threshold, reliable transmission may be activated. The threshold is related to time-to-live. In particular, the threshold may be configured as the time to live versus the traffic transmission period, or the number of packet transmissions, or the number of maximum consecutive errors of packet transmissions.
In another implementation, reliable transmissions may be deactivated based on time-to-live. For example, when the first packet of the transmission is transmitted correctly after the reliable transmission is activated, the reliable transmission is deactivated. For example, when the reliable transmission is activated, the reliable transmission is deactivated after N packets or consecutive N packets are transmitted correctly. For example, when a reliable transmission is activated, the reliable transmission is deactivated after a packet transmission is correct.
Based on the scheme, the terminal equipment can activate reliable transmission under the conditions that the data transmission fails and the transmission time does not exceed the maximum transmission time, can improve the probability of successful data transmission in the maximum transmission time, and does not influence the transmission of other data outside the maximum transmission time.
One feature of the above example is: activation of reliable transmission is triggered upon failure of the target data transmission. Specifically, on the premise that the transmission time of the target data is smaller than the maximum transmission time, once the transmission of the target data fails, the activation of the reliable transmission is triggered. Optionally, the terminal device may also take other factors into account when activating or deactivating reliable transmissions. That is, when the target data transmission fails and certain conditions are met, the reliable transmission is activated. Specifically, on the premise that the reliable transmission is not activated and the transmission time of the target data is less than the maximum transmission time, the terminal device may activate or deactivate the reliable transmission under a certain condition, for example, according to a trigger condition, where S320 may include at least one of the following cases:
activating reliable transmission when the target data transmission fails and when the transmission parameters meet the triggering conditions;
deactivating reliable transmission when the target data transmission fails and when the transmission parameter does not meet the triggering condition;
when the target data transmission is successful, and when the transmission parameters meet the triggering conditions, the reliable transmission is deactivated;
when the target data transmission is successful, and when the transmission parameters do not meet the trigger conditions, the reliable transmission is deactivated.
The reliable transmission is activated or deactivated based on the trigger condition, and the transmission reliability in the survival time is improved, and meanwhile, the reliable transmission resource is prevented from being wasted.
The transmission parameters may include at least one of the following:
the existence of the target data (i.e., whether the target data exists), the number of consecutive packet transmission failures (e.g., the number of consecutive transmission failures of the target data, the number of consecutive packet transmission failures belonging to an object (the object may be TSC stream, DRB, PDU session, qoS flow, etc.), the timing of the reliable transmission, the channel quality, the timer or its running condition (i.e., timer status.
When the transmission parameter includes the number of times of failure of the target data transmission, the trigger condition may include: the number of times the target data transmission fails is greater than or equal to a number of times threshold.
For example, the current reliable transmission is not activated, the transmission time of the target data is less than the survival time, and the threshold number of times in the trigger condition is 2; if the target data transmission fails for 2 times, the terminal equipment can activate reliable transmission; if the target data transmission fails 1 time, the terminal device may deactivate the reliable transmission.
For example, when the current reliable transmission is not activated, the threshold number of times in the trigger condition is 2, and two continuous packet transmissions corresponding to one TSC stream fail, the terminal device may activate the reliable transmission; if there are only 1 packet transmission failures corresponding to one TSC stream, or there are no consecutive 2 packet transmission failures, or there are transmission correct packets before the number of packets with consecutive transmission errors does not reach the threshold number of times, the terminal device can deactivate reliable transmission.
The terminal device may record the number of transmission failures through a counter, and the value of the counter is increased by 1 every time the target data fails to be transmitted, and the counter is reset to 0 after the target data is successfully transmitted. The transmission failure is, for example, a packet transmission error or a packet continuous transmission error.
Alternatively, the terminal device may record the number of transmission failures through a counter, and the initial number is 0. The counter is incremented by 1 when there is a packet transmission error. The counter is reset when there are successfully transmitted packets before the threshold number of times is not reached. The transmission failure is, for example, a packet transmission error or a packet continuous transmission error.
Further, the network may indicate or configure the number of times threshold.
When the transmission parameter includes a time instant at which the reliable transmission is activated, the trigger condition may include: the transmission time of the target data coincides with the time instant at which the reliable transmission is activated.
For example, when the current reliable transmission is not activated, the transmission time of the target data is less than the survival time, the time for activating the reliable transmission in the trigger condition is the 2 nd TSC service period after the transmission time begins to be counted, and if the transmission time of the target data reaches the 2 nd TSC service period (i.e., the transmission time coincides with the time of the reliable transmission), and the target data transmission fails, the terminal device may activate the reliable transmission; if the transmission time of the target data does not reach the 2 nd TSC service period, the terminal equipment can deactivate the reliable transmission. The transmission time may be counted from a first time, and the 2 TSC service periods are offset values from the first time, where the offset values may be preset or configured by the network device or indicated by the network device.
When the transmission parameter includes channel quality, the trigger condition may include: and comparing the channel quality with a channel quality threshold. Specifically, the triggering condition may include: the channel quality is less than or equal to a first channel quality threshold and/or the channel quality is greater than or equal to a second channel quality threshold.
The channel quality may be represented by a reference signal received power (reference receiving power, RSRP) or other parameter. The first channel quality threshold is a channel quality threshold preset or configured by the network device, and may be, for example, an RSRP threshold. The first channel quality threshold may be a channel quality threshold of a current serving cell and/or other cells.
For example, the first channel quality threshold is a channel quality threshold of the current serving cell, and reliable transmission is activated when the channel quality is less than or equal to the channel quality threshold of the current serving cell; for another example, the first channel quality threshold is a channel quality threshold of a neighboring cell, and when the channel quality is greater than or equal to the channel quality threshold of the neighboring cell, reliable transmission is activated; for another example, the first channel quality threshold is a channel quality threshold of a current serving cell and a channel quality threshold of a neighboring cell, and reliable transmission is activated when the channel quality is less than or equal to the channel quality threshold of the current serving cell and when the channel quality is greater than or equal to the channel quality threshold of the neighboring cell.
Two examples of activating or deactivating reliable transmissions based on channel quality are given below.
Example one, as shown in fig. 5.
The reliable transmission is copy transmission, the transmission time of the target data does not exceed the survival time, and other transmission parameters meet the triggering condition for activating the reliable transmission. The terminal device may first determine whether multiple channel quality thresholds are currently configured.
If the first channel quality threshold is a uniquely configured channel quality threshold, when the channel quality is less than or equal to the first channel quality threshold, the terminal device activates duplicate transmission, and the number of RLC entities corresponding to the duplicate transmission is a first number, for example, 2 shown in fig. 5, where the first number may be preset or configured by the network device; the terminal device may deactivate the duplicate transmission when the channel quality is greater than the first channel quality threshold.
If the first channel quality threshold is not a uniquely configured channel quality threshold, e.g. the terminal device is configured with 3 channel quality thresholds, the terminal device may perform the following method.
When the channel quality is greater than the first channel quality threshold, the terminal device may deactivate duplicate transmissions;
when the channel quality is less than the first channel quality threshold, and when the channel quality is greater than or equal to the second channel quality threshold, the terminal device may activate duplicate transmissions, where the number of RLC entities corresponding to the duplicate transmissions is a second number, for example, 2 shown in fig. 5, and the second number may be preset or configured by the network device.
When the channel quality is less than the second channel quality threshold, and when the channel quality is greater than or equal to the third channel quality threshold, the terminal device may activate duplicate transmission, where the number of RLC entities corresponding to the duplicate transmission is a third number, for example 3 shown in fig. 5, and the third number may be preset or configured by the network device.
When the channel quality is less than the third channel quality threshold, the terminal device may activate duplicate transmission, where the number of RLC entities corresponding to the duplicate transmission is a fourth number, for example, 4 shown in fig. 5, and the fourth number may be preset or configured by the network device.
After the terminal device activates the duplicate transmission, the target data may be transmitted using the corresponding number of RLC entities. The terminal device may select several RLC entities with the best channel quality for duplicate transmission according to the channel quality of the carrier corresponding to each RLC entity.
In example one, activating the duplicate transmission may be to enhance the reliability of the duplicate transmission, e.g., to increase the number of data packets of the duplicate transmission; deactivating the duplicate transmission may be to reduce the reliability of the duplicate transmission, i.e., to reduce the number of data packets of the duplicate transmission.
Example two, as shown in fig. 6.
The reliable transmission is a repeated transmission and/or a transmission mode containing a target MCS, the transmission time of the target data does not exceed the survival time, and other transmission parameters meet the triggering condition for activating the reliable transmission. The terminal device may first determine whether multiple channel quality thresholds are currently configured.
If the first channel quality threshold is a uniquely configured channel quality threshold, when the channel quality is less than or equal to the first channel quality threshold, the terminal device activates retransmission and/or a transmission mode including a target MCS, where the number of retransmissions of the retransmission is a first number of retransmissions, and the index of the target MCS is a first index, where the first number of retransmissions is, for example, 2 shown in fig. 6, and the first index is, for example, 5 shown in fig. 6; the terminal device may deactivate the duplicate transmission when the channel quality is greater than the first channel quality threshold.
If the first channel quality threshold is not a uniquely configured channel quality threshold, e.g. the terminal device is configured with 3 channel quality thresholds, the terminal device may perform the following method.
When the channel quality is greater than the first channel quality threshold, the terminal device may deactivate duplicate transmissions;
when the channel quality is less than the first channel quality threshold, and when the channel quality is greater than or equal to the second channel quality threshold, the terminal device may activate the retransmission and/or the transmission mode including the target MCS, where the retransmission number of the retransmission is a second retransmission number, and the index of the target MCS is a second index, where the second retransmission number is, for example, 2 shown in fig. 6, and the second index is, for example, 5 shown in fig. 6, and the second retransmission number and the second index may be preset or configured by the network device.
When the channel quality is less than the second channel quality threshold, and when the channel quality is greater than or equal to the third channel quality threshold, the terminal device may activate the retransmission and/or the transmission mode including the target MCS, where the retransmission number of the retransmission is a third retransmission number, and the index of the target MCS is a third index, where the third retransmission number is, for example, 4 shown in fig. 6, and the third index is, for example, 3 shown in fig. 6, and the third retransmission number and the third index may be preset or configured by the network device.
When the channel quality is less than the third channel quality threshold, the terminal device may activate the retransmission and/or the transmission mode including the target MCS, where the retransmission number of the retransmission is a fourth retransmission number, and the index of the target MCS is a fourth index, where the fourth retransmission number is, for example, 8 shown in fig. 6, the fourth index is, for example, 1 shown in fig. 6, and the fourth retransmission number and the fourth index may be preset or configured by the network device.
After the terminal device activates the repeated transmission and/or the transmission mode containing the target MCS, the target data may be transmitted using the corresponding repeated transmission times and/or the target MCS.
The network device may also configure more channel quality thresholds for the terminal device.
In example two, the activation of the retransmission may be to enhance the reliability of the retransmission, e.g., to increase the number of data packets for the retransmission; deactivating the retransmission may be to reduce the reliability of the retransmission, i.e., reduce the number of data packets that are retransmitted.
The repeated transmission may include a transmission scheme of the target MCS, and the repeated transmission may be used alone or at least two of the three may be used or configured together.
In the above example, if the terminal device is configured with a channel quality threshold, the complexity of activating reliable transmission can be reduced; if the terminal device is configured with multiple channel quality thresholds, the waste of transmission resources can be reduced. The network device may configure different channel quality thresholds for the terminal device according to the actual situation (e.g., the processing capability of the terminal device).
In addition, the network device may also send first indication information to the terminal device, where the first indication information is used to indicate a trigger condition used when the terminal device activates reliable transmission. For example, the first indication information may indicate: the trigger condition includes only the first channel quality threshold, or the trigger condition includes the first channel quality threshold, the second channel quality threshold, and the third channel quality threshold. The network device may also send second indication information to the terminal device, the second indication information indicating whether the reliable transport function is activated. Optionally, the first indication information and the second indication information are the same indication information.
Of course, the content of the first indication information and/or the second indication information may also be determined by the UE, or predefined.
In this application, the transmission time is a time from a first time, which may be one of the following times:
The arrival time or transmission time of the first data packet with transmission failure, the starting time of the transmission period, the ending time of the transmission period and the time of the transmission failure;
the arrival time or transmission time of the last tolerable transmission failure data packet, the starting time of the transmission period, the ending time of the transmission period and the transmission failure time;
the arrival time or transmission time of the tolerable Nth data packet with transmission failure, the starting time of the transmission period, the ending time of the transmission period and the transmission failure time, wherein N is a positive integer.
The arrival time or the transmission time may be: the MAC PDU grouping time, the time when the data packet grouping is completed, the time when the data packet is transmitted from the delay to the physical layer, the physical layer transmitting time, or the time when the data packet is transmitted by the antenna.
If the transmission period of a data packet is a TSC service period, the start time of the transmission period is related to the start time or the packet arrival time of the TSC service period, for example, the start time of the transmission period is +/-delta of the start time or the packet arrival time of the TSC service period, or a time within a period around the start time or the packet arrival time of the TSC service period. The end of the transmission period is related to the end of the TSC traffic period or the next packet arrival time. Such as the end of the transmission period being the end of the TSC traffic period or the next packet arrival time +/-delta, or the end of the TSC traffic period or a time within a period around the next packet arrival time.
The time of the transmission failure may be the time when the terminal device receives a negative acknowledgement (negative acknowledge, NACK) sent by the network device, for example, the time when 1 or N NACKs are received, or may be a preset time, for example, after the terminal device sends a data packet for a period of time, the terminal device still does not receive feedback information, and then the terminal device may determine that the end time of the period of time is the time of the transmission failure.
The last transmission failure packet that can be tolerated may be a last transmission failure packet within a survival time, for example, the survival time is 3 TSC service periods, the terminal device can transmit 1 data packet in each TSC service period, and the data packets within the 1 st TSC service period and the 2 nd TSC service period are all transmitted to fail, and then the last transmission failure packet that can be tolerated may be the data packet within the 3 rd TSC service period. At the start time of the 3 rd TSC service period, or at the arrival time or transmission failure time of the data packet in the 3 rd TSC service period, the terminal device may activate reliable transmission.
Similarly, if the survival time is 3 TSC service periods, the terminal device can transmit 1 data packet in each TSC service period, and the data packet in the first TSC service period fails to be transmitted, the tolerable nth packet of transmission failure may be the 2 nd data packet. At the start time or the end time of the 2 nd TSC service period, or at the arrival time or the transmission failure time of the data packet in the 2 nd TSC service period, the terminal device may activate reliable transmission.
In addition, the network device may also send indication information to the terminal device indicating the transmission time or the first time.
In the following, two examples of methods for activating or deactivating reliable transmissions are given.
In one embodiment, the duplicate is activated or deactivated based on the survivinal time. As shown in fig. 7.
The cause and beneficial effects of embodiment one derive: to guarantee the survivinal time requirement, i.e. a certain time, at least one packet completes the end-to-end transmission correctly. Specifically, for an application or service, when survivin time=period, after the transmission of the previous packet fails, the next packet must be correctly transmitted, so that activation or deactivation of the duplicate of a specific object (DRB, qoS flow, etc.) can be determined based on survivin time, so as to ensure reliable transmission of the service and ensure the effective utilization of resources.
The invention is as follows:
the ue determines whether to activate or deactivate the duplicate transmission based on the survivinal time.
2. The ue-survival time based duplication activation/deactivation based function is network configured.
3. Based on 1, the network indicates a point in time, or trigger condition, to transmit using the repetition.
4. Based on 1, upon indicating the survivinal time configuration, the network further configures a threshold to activate the duplicate.
The UE determines the number of active RLC entities or copies based on survivinal time and a threshold.
5. Based on 1, the threshold for the number of copies or RLC entities is determined when the network configuration activates the duplicate transmission. The UE determines the number of RLC entities or copies activated based on the threshold.
The specific procedure of this scheme is as follows:
1. the base station obtains the auxiliary information of TSN service, such as PDU session or QoS flow or survivintime corresponding to DRB
2. The base station transmits RRC configuration information to the UE, including:
1) An indication, such as an indication or configuration, of whether the UE-survival time based duplication activation/deactivation function is on.
2) The survivinal time is configured. Specifically, the survivin time is configured corresponding to PDU session or QoS flow or DRB, for example, the survivin time is 1 TSC service period.
3) A threshold for activating the duplicate. Specifically, the threshold is configured for the corresponding PDU session or QoS flow or DRB. Further included is activating a threshold of 3 RLC entities, 4 RLC entities.
Specifically, the threshold is a comparison threshold of channel quality with the current serving cell, or a particular cell.
For example: (either to a threshold or not)
When the channel quality is greater than or equal to threshold 1, no duplicate transmission is activated. When the channel quality is less than threshold 1, the duplicate transmission is activated. At this time, the number of RLC entities of the repetition may be 2 or configured.
Also for example: (for multiple thresholds, the threshold has mapping relation with duplication copies number)
When the channel quality is greater than or equal to threshold 1, no duplicate transmission is activated. When the channel quality is less than threshold 1, but greater than or equal to threshold 2, duplicate transmissions are activated, using two RLC entities. When the channel quality is less than the threshold 2 and greater than or equal to the threshold 3, the duplicate transmission of 3 RLC entities is activated, and when the channel quality is less than the threshold 3, the duplicate transmission of 4 RLC entities is activated.
4) The point in time at which the repetition is activated, or a trigger condition (e.g., N consecutive packet transmissions failed. Specifically, the count may be started from the packet that failed in the first transmission, and when the count starts and there is a correct transmission of the data packet, the count is reset to 0). Specifically, the time point or the trigger condition is configured for the corresponding PDU session or QoS flow or DRB.
For a time point, specifically, the UE is instructed to activate the indication based on the second offset time of the first time. The first time is: the packet arrival time of the packet transmitted in the first failure, the packet transmission time, the packet transmission period before, the packet transmission period end point, the packet transmission failure time, the last tolerable packet transmitted in the last failure (for example, the survivinval time is 3 periods, the last tolerable packet is the 3 rd packet transmitted continuously in error; of course, the last tolerable packet can also be a specific number of packets, the number can be predefined, can also be determined by the UE, can also be configured by the network), the packet arrival time, the packet transmission period before, the packet transmission period end point, and the packet transmission failure time. The second offset is an offset value corresponding to the first time, and when the second offset time reaches the first time, the UE determines that one condition for activating the repetition is satisfied.
Description: the first time, the second offset, may also be preconfigured, or the UE may determine itself.
The ue receives configuration information from the base station. The UE determines according to the threshold, survivin time, first time, second offset, etc
1) Whether to activate the duplicate
2) Time point of activating a duplicate
3) Number of copies activated at the time of the duplicate
4) RLC entities for the duplicate transmission are selected.
Specifically, when each packet is sent, the UE starts or restarts a timer of the corresponding survivinal time; or if the previous packet is successfully transmitted, the UE starts or restarts the timer of the corresponding survivin time when transmitting the next continuous packet
For example, when the survivinal time is 3 periods, the UE activates the repetition transmission when the third consecutive packet transmission fails. If the RSRP of the current serving cell is less than the threshold 1 and greater than the threshold 2, the UE determines to activate 3 RLC entity transmission duration, i.e., activate 3 copies. Correspondingly, the UE further selects three RLC entities with the best channel quality according to the channel quality of the carrier corresponding to each RLC entity, and performs the duplicate transmission.
Extension 1 of the first embodiment: when the repetition is triggered based on the survivin time, the transmission of the repetition can be directly activated at the time point of activating the repetition or when the triggering condition is met; the threshold may be further determined when the time point of the repetition is activated or when a trigger condition is met, for example, when the channel quality (e.g., RSRP) is smaller than the threshold, the repetition transmission is activated.
Embodiment two (repetition transmission/use of specific MCS is activated based on survivinal time). As shown in fig. 8.
Reasons and advantageous effects of the embodiment derivation: to guarantee the survivinal time requirement, i.e. a certain time, at least one packet completes the end-to-end transmission correctly. Specifically, for an application or service, when survivin time=period, after the transmission of the previous packet fails, the next packet must be correctly transmitted, so that activation or deactivation of repetition of a specific object (DRB, qoS flow, etc.) can be determined based on survivin time, and/or a low MCS is used to ensure reliable transmission of the service and at the same time, to ensure effective utilization of resources.
The invention is as follows:
the ue determines whether to activate or deactivate repetition transmission and/or use a specific MCS based on the survivinal time.
2. The ue-survival time based repetition transport and/or specific mcsactive/deactivation functions are network configured based on 1.
3. Based on 1, the network indicates a point in time, or trigger condition, at which to use repetition transmission and/or a specific MCS.
4. Based on 1, the network configures a repetition parameter including at least the number of repetitions. Further, multiple thresholds and multiple repetition times may be given. Specifically, the UE may determine which repetition is used for transmission based on a comparison of the channel quality to a threshold.
5. Based on 1, the network configures an MCS parameter, such as an MSC index or an MCS table. Further, multiple thresholds and multiple MCS parameters may also be given. Specifically, the UE may determine which MCS parameter to use for transmission based on a comparison of the channel quality to a threshold.
The specific procedure of this scheme is as follows:
1. the base station obtains the auxiliary information of TSN service, such as PDU session or QoS flow or survivintime corresponding to DRB
2. The base station transmits RRC configuration information to the UE, including:
1) The UE-survival time based repetition transmits and/or an indication, such as an indication or configuration, of whether a function of a particular MCS activation/deactivation is on.
2) Indicating the survivinal time parameter. The specific parameter is configured corresponding to PDU session or QoS flow or DRB, for example, survivinal time is 1 TSC service period.
3) Parameters of repetition are configured, including time-frequency resources of repetition transmission, and the number of repetition transmission, such as 2,4 and 8. Specifically, the repetition parameter is configured for the corresponding PDU session or QoS flow or DRB. Further, multiple thresholds and multiple repetition times may be given. Specifically, the UE may determine which repetition is used for transmission based on a comparison of the channel quality to a threshold. Specifically, the threshold is a comparison threshold of channel quality with the current serving cell, or a particular cell.
For example: (either to a threshold or not)
When the channel quality is greater than or equal to threshold 1, repetition transmission is not activated. When the channel quality is less than threshold 1, repetition transmission is activated. The unique number of repetition transmissions is used.
Also for example: (the threshold has mapping relation with repetition times for a plurality of thresholds)
When the channel quality is greater than or equal to threshold 1, repetition transmission is not activated. When the channel quality is less than the threshold 1 but greater than or equal to the threshold 2, the repetition transmission is activated, using the first repetition number. And when the channel quality is smaller than the threshold 2 and larger than or equal to the threshold 3, the second repetition times are used for repetition transmission, and when the channel quality is smaller than the threshold 3, the third repetition times are used for repetition transmission.
4) Parameters of MCS, such as MCS table, MCS index, MCS value, etc., are configured. Specifically, the MCS parameter is configured for a corresponding PDU session or QoS flow or DRB. Further, multiple thresholds and multiple MCS times may also be given. Specifically, the UE may determine which MCS to use for transmission based on a comparison of the channel quality to a threshold. Specifically, the threshold is a comparison threshold of channel quality with the current serving cell, or a particular cell.
Specific determination procedure, same as 3).
5) A time point when repetition transmission and/or use of a specific MCS is activated, or a trigger condition (e.g., N consecutive packet transmissions fail. Specifically, the count may be started from the packet that failed in the first transmission, and when the count is started and there is a correct transmission of the data packet, the count is reset to 0. Specifically, the time point or the trigger condition is configured for the corresponding PDU session or QoS flow or DRB.
For a point in time, the UE is specifically instructed to activate repetition and/or a specific MCS based on a second offset time instant of the first time instant. The first time is: the packet arrival time of the packet transmitted in the first failure, the packet transmission time, the packet transmission period end point, the last tolerable packet transmitted in the last failure (for example, the survivinal time is 3 periods, the last tolerable packet is the 3 rd packet of continuous transmission errors; of course, the last tolerable packet can also be a specific number of packets, the number can be predefined or determined by the UE or configured by the network), the packet arrival time, the packet transmission period end point before the packet transmission period. The second offset is an offset value corresponding to the first time, and when the second offset time reaches the first time, the UE determines that one condition for activating repetition and/or a specific MCS is satisfied.
Description: the first time, the second offset, may also be preconfigured, or the UE may determine itself.
The ue receives configuration information from the base station. The UE determines according to the threshold, repetition number, MCS, first time, second offset, etc
1) Whether to activate repetition and/or specific MCS
2) Time point when repetition and/or specific MCS are activated
Specifically, when each packet is sent, the UE starts or restarts a timer of the corresponding survivinal time; or if the previous packet is successfully transmitted, the UE starts or restarts the timer of the corresponding survivin time when transmitting the next continuous packet
For example, when the survivinal time is 3 periods, the UE activates repetition and/or a specific MCS when the third consecutive packet transmission fails. If the RSRP of the current serving cell is less than the threshold 1 and greater than the threshold 2, the UE determines to use repetition transmission, the number of repetition is 4, and a specific MCS index is used, and the MCS index is 5.
Extension 1 of embodiment two: when the repetition and/or the specific MCS is triggered based on the survivin time, the repetition and/or the specific MCS can be directly used for transmission at the time point when the repetition and/or the specific MCS is activated or when the triggering condition is met; the threshold may also be further determined when a repetition and/or a point in time of a specific MCS is activated or a trigger condition is met, such as when the channel quality (e.g., RSRP) is less than the threshold, the repetition and/or specific MCS is used for transmission.
Examples of methods of activating or deactivating reliable transmissions provided herein are described above in detail. It will be appreciated that the means for activating or deactivating reliable transmissions comprise, in order to achieve the above-described functions, corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The present application may divide functional units of a device that activates or deactivates reliable transmission according to the above method examples, for example, each function may be divided into each functional unit, or two or more functions may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units. It should be noted that the division of the units in the present application is illustrative, and is merely a logic function division, and other division manners may be implemented in practice.
Fig. 9 is a schematic structural diagram of an apparatus for activating or deactivating reliable transmission provided herein. The apparatus 900 comprises a processing unit 910.
The processing unit 910 is configured to: obtaining the maximum transmission time; activating or deactivating a reliable transmission according to the maximum transmission time, the reliable transmission including at least one of: and copying transmission, repeating transmission and including the transmission mode of the target MCS.
Optionally, when the reliable transmission is not activated or deactivated, the processing unit 910 is specifically configured to: activating the reliable transmission when target data exists; or when the target data transmission fails, activating the reliable transmission.
Optionally, when the reliable transmission is not activated or deactivated, the processing unit 910 is specifically configured to: deactivating the reliable transmission when the target data is not present; or when the target data transmission is successful, deactivating the reliable transmission.
Optionally, the processing unit 910 is further configured to: and determining a threshold of the tolerable packet transmission error times according to the maximum transmission time.
Optionally, when the reliable transmission is not activated or deactivated, the processing unit 910 is specifically configured to: and activating the reliable transmission when the number of packet transmission errors or packet continuous transmission errors is greater than or equal to the threshold.
Optionally, when the reliable transmission is not activated or deactivated, the processing unit 910 is specifically configured to: and when the number of packet transmission errors or packet continuous transmission errors is less than or equal to the threshold, deactivating the reliable transmission.
Optionally, the processing unit 910 is specifically configured to: when the target data exists or the target data transmission fails, and when a trigger condition is satisfied, the reliable transmission is activated.
Optionally, the processing unit 910 is specifically configured to: and when the target data does not exist or the target data is successfully transmitted, and when a trigger condition is not met, deactivating the reliable transmission.
Optionally, the triggering condition includes at least one of: and if the target data exists, the number of times of continuous packet transmission failure, the time of activating the reliable transmission, the channel quality and the timer state.
Optionally, in the case that the channel quality threshold is one, the channel quality threshold comprises a first channel quality threshold, and when the channel quality is less than or equal to the first channel quality threshold,
when the reliable transmission includes the duplicate transmission, the number of radio link control RLC entities corresponding to the duplicate transmission is a first number; and/or the number of the groups of groups,
When the reliable transmission includes the repeated transmission, the retransmission times corresponding to the repeated transmission are first retransmission times; and/or the number of the groups of groups,
when the reliable transmission includes the transmission mode including the target MCS, an index of the target MCS is a first index.
Optionally, at least one of the first number, the first number of retransmissions, and the first index is network device configured.
Optionally, in the case of a plurality of channel quality thresholds, the channel quality thresholds include a first channel quality threshold and a second channel quality threshold, the first channel quality threshold being greater than the second channel quality threshold, and when the channel quality is greater than or equal to the second channel quality threshold and less than the first channel quality threshold,
when the reliable transmission includes the duplicate transmission, the number of RLC entities corresponding to the duplicate transmission is a second number; and/or the number of the groups of groups,
when the reliable transmission includes the repeated transmission, the retransmission times corresponding to the repeated transmission are second retransmission times; and/or the number of the groups of groups,
and when the reliable transmission comprises the transmission mode containing the target MCS, the index of the target MCS is a second index.
Optionally, in the case of multiple channel quality thresholds, the channel quality thresholds include a first channel quality threshold, a second channel quality threshold, and a third channel quality, the first channel quality threshold is greater than the second channel quality threshold, the second channel quality threshold is greater than the third channel quality threshold, and when the channel quality is greater than or equal to the third channel quality threshold and less than the second channel quality threshold,
when the reliable transmission includes the duplicate transmission, the number of RLC entities corresponding to the duplicate transmission is a third number; and/or the number of the groups of groups,
when the reliable transmission includes the retransmission, the retransmission number corresponding to the retransmission is a third retransmission number, and/or;
and when the reliable transmission comprises the transmission mode containing the target MCS, the index of the target MCS is a third index.
Optionally, in the case of multiple channel quality thresholds, the channel quality thresholds include a first channel quality threshold, a second channel quality threshold, and a third channel quality, the first channel quality threshold being greater than the second channel quality threshold, the second channel quality threshold being greater than the third channel quality threshold, and when the channel quality is less than the third channel quality threshold,
When the reliable transmission includes the duplicate transmission, the number of RLC entities corresponding to the duplicate transmission is a fourth number; and/or the number of the groups of groups,
when the reliable transmission includes the retransmission, the retransmission number corresponding to the retransmission is a fourth retransmission number; and/or the number of the groups of groups,
and when the reliable transmission comprises the transmission mode containing the target MCS, the index of the target MCS is a fourth index.
Optionally, the apparatus 900 further comprises a receiving unit for: receiving first indication information, wherein the first indication information is used for indicating the triggering condition; and/or receiving second indication information, wherein the second indication information is used for indicating whether the reliable transmission function is activated.
Optionally, the transmission time of the target data is less than the maximum transmission time
Optionally, the transmission time is a time from a first time, and the first time is one of the following times:
the arrival time or transmission time of the first data packet with transmission failure, the starting time of the transmission period, the ending time of the transmission period and the time of the transmission failure;
the arrival time or transmission time of the last tolerable transmission failure data packet, the starting time of the transmission period, the ending time of the transmission period and the transmission failure time;
The arrival time or transmission time of the tolerable Nth data packet with transmission failure, the starting time of the transmission period, the ending time of the transmission period and the transmission failure time, wherein N is a positive integer.
Optionally, the processing unit 910 is further configured to: and starting or restarting a timer, wherein the timer is used for activating the reliable transmission, or is used for avoiding that the data transmission does not meet the requirement of the maximum transmission duration.
Optionally, the running duration of the timer is related to the duration of the maximum transmission time.
Optionally, the running duration of the timer is the duration of the maximum transmission time.
Optionally, the processing unit 910 is specifically configured to:
when the first data transmission is completed, starting or restarting the timer; or,
and starting or restarting the timer after the first data is successfully transmitted and when the target data starts to be transmitted, wherein the first data and the target data are two data with adjacent transmission time.
Optionally, the processing unit 910 is specifically configured to:
the maximum transmission time is obtained from the first node.
Optionally, the first node includes: a terminal and/or a network device.
Optionally, the network device includes at least one of the following: base station, CNC, TSN node.
Optionally, when the maximum transmission time is acquired from the network device, the maximum transmission time is carried in a dedicated radio resource control RRC message and/or a broadcast message.
Optionally, the granularity corresponding to the maximum transmission time is one of the following granularities: DRB, qoS flows, TSC flows, PDU sessions.
Optionally, the apparatus 900 further comprises a receiving unit for: and receiving configuration information, wherein the configuration information is used for configuring a function for activating or deactivating reliable transmission according to the maximum transmission time.
Optionally, the maximum transmission time is a survival time.
The specific manner in which apparatus 900 performs a method of activating or deactivating reliable transmissions and the resulting benefits may be found in the relevant description of the method embodiments.
Fig. 10 is a schematic structural diagram of an apparatus for activating or deactivating reliable transmissions provided herein. The apparatus 1000 comprises a transmitting unit 1010.
The transmitting unit 1010 is configured to: transmitting a maximum transmission time to a first terminal device, the maximum transmission time being used for the first terminal device to activate or deactivate a reliable transmission, the reliable transmission comprising at least one of: and copying transmission, repeating transmission and including the transmission mode of the target MCS.
Optionally, the sending unit 1010 is specifically configured to: and sending the maximum transmission time to the first terminal equipment through SMF.
Optionally, the sending unit 1010 is specifically configured to: and sending the maximum transmission time to the first terminal equipment through a base station.
Optionally, the sending unit 1010 is specifically configured to: and sending the maximum transmission time to the first terminal equipment through the second terminal equipment.
Optionally, the apparatus 1000 further comprises a sending unit, configured to: and sending indication information to the first terminal equipment, wherein the indication information is used for indicating a trigger condition, and the trigger condition is used for enabling or disabling the reliable transmission by the first terminal equipment.
Optionally, the apparatus 1000 further comprises a sending unit, configured to: and sending configuration information to the first terminal equipment, wherein the configuration information is used for configuring a function for activating or deactivating reliable transmission according to the maximum transmission time.
Optionally, the maximum transmission time is a survival time.
The specific manner in which the apparatus 1000 performs a method of activating or deactivating reliable transmissions and the resulting benefits may be found in the relevant description of the method embodiments.
Fig. 11 shows a schematic structural diagram of a communication device provided in the present application. The dashed line in fig. 11 indicates that the unit or the module is optional. The apparatus 1100 may be used to implement the methods described in the method embodiments above. The device 1100 may be a terminal device or a network device or chip.
The device 1100 includes one or more processors 1101, which one or more processors 1101 may support the device 1100 to implement the methods of the corresponding method embodiments of fig. 2-6. The processor 1101 may be a general purpose processor or a special purpose processor. For example, the processor 1101 may be a central processing unit (central processing unit, CPU). The CPU may be used to control the device 1100, execute software programs, and process data for the software programs. The device 1100 may also include a communication unit 1105 to enable input (reception) and output (transmission) of signals.
For example, the device 1100 may be a chip, the communication unit 1105 may be an input and/or output circuit of the chip, or the communication unit 1105 may be a communication interface of the chip, which may be an integral part of a terminal device or a network device or other wireless communication device.
For another example, the device 1100 may be a terminal device or a network device, the communication unit 1105 may be a transceiver of the terminal device or the network device, or the communication unit 1105 may be a transceiver circuit of the terminal device or the network device.
The device 1100 may include one or more memories 1102 on which a program 1104 is stored, the program 1104 being executable by the processor 1101 to generate instructions 1103 such that the processor 1101 performs the methods described in the above method embodiments according to the instructions 1103. Optionally, the memory 1102 may also have data stored therein. Optionally, the processor 1101 may also read data stored in the memory 1102, which may be stored at the same memory address as the program 1104, or which may be stored at a different memory address than the program 1104.
The processor 1101 and the memory 1102 may be provided separately or may be integrated together, for example, on a System On Chip (SOC) of the terminal device.
Device 1100 may also include antenna 1106. The communication unit 1105 is configured to implement a transceiving function of the device 1100 through the antenna 1106.
The specific manner in which the processor 1101 performs the method of activating or deactivating reliable transmissions may be found in the relevant description of the method embodiments.
It should be understood that the steps of the above-described method embodiments may be accomplished by logic circuitry in the form of hardware or instructions in the form of software in the processor 1101. The processor 1101 may be a CPU, digital signal processor (digital signal processor, DSP), application specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA), or other programmable logic device, such as discrete gates, transistor logic, or discrete hardware components.
The present application also provides a computer program product which, when executed by the processor 1101, implements the method described in any of the method embodiments of the present application.
The computer program product may be stored in the memory 1102, for example, the program 1104, and the program 1104 is finally converted into an executable object file that can be executed by the processor 1101 through preprocessing, compiling, assembling, and linking.
The present application also provides a computer readable storage medium having stored thereon a computer program which, when executed by a computer, implements a method according to any of the method embodiments of the present application. The computer program may be a high-level language program or an executable object program.
Such as memory 1102. The memory 1102 may be volatile memory or nonvolatile memory, or the memory 1102 may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM).
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working processes and technical effects of the apparatus and device described above may refer to corresponding processes and technical effects in the foregoing method embodiments, which are not described in detail herein.
In several embodiments provided in the present application, the disclosed systems, apparatuses, and methods may be implemented in other manners. For example, some features of the method embodiments described above may be omitted, or not performed. The above-described apparatus embodiments are merely illustrative, the division of units is merely a logical function division, and there may be additional divisions in actual implementation, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the elements or the coupling between the elements may be direct or indirect, including electrical, mechanical, or other forms of connection.
It should be understood that, in various embodiments of the present application, the size of the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely one association relationship describing the associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In summary, the foregoing description is only a preferred embodiment of the technical solution of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (16)

1. A method of activating or deactivating reliable transmissions, comprising:
obtaining the maximum transmission time;
activating or deactivating a reliable transmission according to the maximum transmission time, the reliable transmission including at least one of: and copying transmission, repeating transmission and transmitting modes including target modulation and coding strategy MCS.
2. The method of claim 1, wherein when the reliable transmission is inactive or deactivated, the activating or deactivating the reliable transmission according to the maximum transmission time comprises:
Activating the reliable transmission when target data exists; or,
and when the target data transmission fails, activating the reliable transmission.
3. The method according to claim 2, characterized in that: the target data is data to be transmitted or transmitted data.
4. A method according to claim 3, wherein if the transmission time of the target data is less than the survival time, the terminal device activates the reliable transmission if the transmission of the target data fails, or the terminal device deactivates the reliable transmission if the transmission of the target data is successful;
and if the transmission time of the target data is greater than or equal to the survival time, the terminal equipment deactivates the reliable transmission.
5. The method of claim 2, wherein the activating the reliable transmission when the target data exists or the target data transmission fails comprises:
activating the reliable transmission when a trigger condition is met; wherein the trigger condition includes at least one of:
and if the target data exists, the number of times of continuous packet transmission failure, the time of activating the reliable transmission, the channel quality and the timer state.
6. The method of claim 5, wherein in the case where the channel quality threshold is one, the channel quality threshold comprises a first channel quality threshold, and wherein when the channel quality is less than or equal to the first channel quality threshold,
when the reliable transmission includes the duplicate transmission, the number of radio link control RLC entities corresponding to the duplicate transmission is a first number; and/or the number of the groups of groups,
when the reliable transmission includes the repeated transmission, the retransmission times corresponding to the repeated transmission are first retransmission times; and/or the number of the groups of groups,
when the reliable transmission includes the transmission mode including the target MCS, an index of the target MCS is a first index.
7. The method according to claim 5 or 6, further comprising:
receiving first indication information, wherein the first indication information is used for indicating the triggering condition; and/or the number of the groups of groups,
and receiving second indication information, wherein the second indication information is used for indicating whether the reliable transmission function is activated or not.
8. A method of activating or deactivating reliable transmissions, comprising:
transmitting a maximum transmission time to a first terminal device, the maximum transmission time being used for the first terminal device to activate or deactivate a reliable transmission, the reliable transmission comprising at least one of: and copying transmission, repeating transmission and transmitting modes including target modulation and coding strategy MCS.
9. The method as recited in claim 8, further comprising:
sending first indication information to the first terminal equipment, wherein the first indication information is used for indicating a trigger condition, and the trigger condition is used for enabling or disabling the reliable transmission by the first terminal equipment; and/or the number of the groups of groups,
and sending second indicating information to the first terminal equipment, wherein the second indicating information is used for indicating whether the reliable transmission function is activated or not.
10. An apparatus for activating or deactivating reliable transmissions, comprising a processing unit for:
obtaining the maximum transmission time;
activating or deactivating a reliable transmission according to the maximum transmission time, the reliable transmission including at least one of: and copying transmission, repeating transmission and transmitting modes including target modulation and coding strategy MCS.
11. The apparatus according to claim 10, wherein the processing unit is specifically configured to, when the reliable transmission is inactive or deactivated:
activating the reliable transmission when target data exists; or,
and when the target data transmission fails, activating the reliable transmission.
12. The apparatus of claim 11, wherein the processing unit is configured to, when the target data exists or the target data transmission fails:
Activating the reliable transmission when a trigger condition is met; wherein the trigger condition includes at least one of:
and if the target data exists, the number of times of continuous packet transmission failure, the time of activating the reliable transmission, the channel quality and the timer state.
13. The apparatus of claim 12, wherein the channel quality threshold comprises a first channel quality threshold in the case where the channel quality threshold is one, and wherein when the channel quality is less than or equal to the first channel quality threshold,
when the reliable transmission includes the duplicate transmission, the number of radio link control RLC entities corresponding to the duplicate transmission is a first number; and/or the number of the groups of groups,
when the reliable transmission includes the repeated transmission, the retransmission times corresponding to the repeated transmission are first retransmission times; and/or the number of the groups of groups,
when the reliable transmission includes the transmission mode including the target MCS, an index of the target MCS is a first index.
14. The apparatus according to claim 12 or 13, further comprising a receiving unit for:
receiving first indication information, wherein the first indication information is used for indicating the triggering condition; and/or the number of the groups of groups,
And receiving second indication information, wherein the second indication information is used for indicating whether the reliable transmission function is activated or not.
15. An apparatus for activating or deactivating reliable transmissions, comprising a transmitting unit for:
transmitting a maximum transmission time to a first terminal device, the maximum transmission time being used for the first terminal device to activate or deactivate a reliable transmission, the reliable transmission comprising at least one of: and copying transmission, repeating transmission and transmitting modes including target modulation and coding strategy MCS.
16. The apparatus of claim 15, wherein the transmitting unit is further configured to:
sending first indication information to the first terminal equipment, wherein the first indication information is used for indicating a trigger condition, and the trigger condition is used for enabling or disabling the reliable transmission by the first terminal equipment; and/or the number of the groups of groups,
and sending second indicating information to the first terminal equipment, wherein the second indicating information is used for indicating whether the reliable transmission function is activated or not.
CN202311363752.XA 2020-01-07 2020-01-07 Method and device for activating or deactivating reliable transmission Pending CN117528640A (en)

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